frontend/package-lock.json

@@ -17,6 +17,7 @@
         "camelcase-keys": "^9.1.3",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
+        "framer-motion": "^12.23.26",
         "humps": "^2.0.1",
         "lucide-react": "^0.511.0",
         "markdown-it": "^14.1.0",
@@ -3573,6 +3574,33 @@
         "url": "https://github.com/sponsors/rawify"
       }
     },
+    "node_modules/framer-motion": {
+      "version": "12.23.26",
+      "resolved": "https://registry.npmjs.org/framer-motion/-/framer-motion-12.23.26.tgz",
+      "integrity": "sha512-cPcIhgR42xBn1Uj+PzOyheMtZ73H927+uWPDVhUMqxy8UHt6Okavb6xIz9J/phFUHUj0OncR6UvMfJTXoc/LKA==",
+      "license": "MIT",
+      "dependencies": {
+        "motion-dom": "^12.23.23",
+        "motion-utils": "^12.23.6",
+        "tslib": "^2.4.0"
+      },
+      "peerDependencies": {
+        "@emotion/is-prop-valid": "*",
+        "react": "^18.0.0 || ^19.0.0",
+        "react-dom": "^18.0.0 || ^19.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@emotion/is-prop-valid": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        },
+        "react-dom": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/fsevents": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
@@ -5216,6 +5244,21 @@
         "node": ">=16 || 14 >=14.17"
       }
     },
+    "node_modules/motion-dom": {
+      "version": "12.23.23",
+      "resolved": "https://registry.npmjs.org/motion-dom/-/motion-dom-12.23.23.tgz",
+      "integrity": "sha512-n5yolOs0TQQBRUFImrRfs/+6X4p3Q4n1dUEqt/H58Vx7OW6RF+foWEgmTVDhIWJIMXOuNNL0apKH2S16en9eiA==",
+      "license": "MIT",
+      "dependencies": {
+        "motion-utils": "^12.23.6"
+      }
+    },
+    "node_modules/motion-utils": {
+      "version": "12.23.6",
+      "resolved": "https://registry.npmjs.org/motion-utils/-/motion-utils-12.23.6.tgz",
+      "integrity": "sha512-eAWoPgr4eFEOFfg2WjIsMoqJTW6Z8MTUCgn/GZ3VRpClWBdnbjryiA3ZSNLyxCTmCQx4RmYX6jX1iWHbenUPNQ==",
+      "license": "MIT"
+    },
     "node_modules/ms": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",

frontend/package.json

@@ -19,6 +19,7 @@
     "camelcase-keys": "^9.1.3",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "framer-motion": "^12.23.26",
     "humps": "^2.0.1",
     "lucide-react": "^0.511.0",
     "markdown-it": "^14.1.0",

frontend/src/components/TagDetailSidebar.tsx

@@ -1,3 +1,4 @@
+import { AnimatePresence, motion } from 'framer-motion'
 import { useEffect, useState } from 'react'
 
 import TagLink from '@/components/TagLink'
@@ -18,18 +19,23 @@ const renderTagTree = (
     tag:        Tag,
     nestLevel:  number,
     path:       string,
-    ): ReactNode[] => {
+): ReactNode[] => {
   const key = `${ path }-${ tag.id }`
 
   const self = (
-      <li key={key} className="mb-1">
+      <motion.li
+	  key={key}
+	  layout
+	  transition={{ duration: .2, ease: 'easeOut' }}
+	  className="mb-1">
 	<TagLink tag={tag} nestLevel={nestLevel}/>
-      </li>)
+      </motion.li>)
 
   return [self,
-	  ...(tag.children
-	      ?.sort ((a, b) => a.name < b.name ? -1 : 1)
-	      .flatMap (child => renderTagTree (child, nestLevel + 1, key)) ?? [])]
+	  ...((tag.children
+	       ?.sort ((a, b) => a.name < b.name ? -1 : 1)
+	       .flatMap (child => renderTagTree (child, nestLevel + 1, key)))
+	      ?? [])]
 }
 
 
@@ -70,55 +76,60 @@ export default (({ post }: Props) => {
   return (
       <SidebarComponent>
 	<TagSearch/>
-	{CATEGORIES.map ((cat: Category) => cat in tags && (
-	    <div className="my-3" key={cat}>
-	      <SubsectionTitle>{categoryNames[cat]}</SubsectionTitle>
-	      <ul>
-		{tags[cat].map (tag => renderTagTree (tag, 0, `cat-${ cat }`))}
-	      </ul>
-	    </div>))}
-	{post && (
-	    <div>
-	      <SectionTitle>情報</SectionTitle>
-	      <ul>
-		<li>Id.: {post.id}</li>
-		{/* TODO: uploadedUser の取得を対応したらコメント外す */}
-		{/*
-		<li>
-		  <>耕作者: </>
-		  {post.uploadedUser
-		   ? (
-		      <Link to={`/users/${ post.uploadedUser.id }`}>
-			{post.uploadedUser.name || '名もなきニジラー'}
-		      </Link>)
-		   : 'bot操作'}
-		</li>
-		*/}
-		<li>耕作日時: {(new Date (post.createdAt)).toLocaleString ()}</li>
-		<li>
-		  <>リンク: </>
-		  <a
-		      className="break-all"
-		      href={post.url}
-		      target="_blank"
-		      rel="noopener noreferrer nofollow">
-		    {post.url}
-		  </a>
-		</li>
-		<li>
-		  {/* TODO: 表示形式きしょすぎるので何とかする */}
-		  <>オリジナルの投稿日時: </>
-		  {!(post.originalCreatedFrom) && !(post.originalCreatedBefore)
-		   ? '不明'
-		   : (
-		      <>
-			{post.originalCreatedFrom
-			 && `${ (new Date (post.originalCreatedFrom)).toLocaleString () } 以降 `}
-			{post.originalCreatedBefore
-			 && `${ (new Date (post.originalCreatedBefore)).toLocaleString () } より前`}
-		      </>)}
-		</li>
-	      </ul>
-	    </div>)}
+	<motion.div layout>
+	  {CATEGORIES.map ((cat: Category) => cat in tags && (
+	      <motion.div layout className="my-3" key={cat}>
+		<SubsectionTitle>{categoryNames[cat]}</SubsectionTitle>
+
+		<motion.ul layout>
+		  <AnimatePresence initial={false}>
+		    {tags[cat].map (tag => renderTagTree (tag, 0, `cat-${ cat }`))}
+		  </AnimatePresence>
+		</motion.ul>
+	      </motion.div>))}
+	  {post && (
+	      <div>
+		<SectionTitle>情報</SectionTitle>
+		<ul>
+		  <li>Id.: {post.id}</li>
+		  {/* TODO: uploadedUser の取得を対応したらコメント外す */}
+		  {/*
+		  <li>
+		    <>耕作者: </>
+		    {post.uploadedUser
+		     ? (
+			<Link to={`/users/${ post.uploadedUser.id }`}>
+			  {post.uploadedUser.name || '名もなきニジラー'}
+			</Link>)
+		     : 'bot操作'}
+		  </li>
+		  */}
+		  <li>耕作日時: {(new Date (post.createdAt)).toLocaleString ()}</li>
+		  <li>
+		    <>リンク: </>
+		    <a
+			className="break-all"
+			href={post.url}
+			target="_blank"
+			rel="noopener noreferrer nofollow">
+		      {post.url}
+		    </a>
+		  </li>
+		  <li>
+		    {/* TODO: 表示形式きしょすぎるので何とかする */}
+		    <>オリジナルの投稿日時: </>
+		    {!(post.originalCreatedFrom) && !(post.originalCreatedBefore)
+		     ? '不明'
+		     : (
+			<>
+			  {post.originalCreatedFrom
+			   && `${ (new Date (post.originalCreatedFrom)).toLocaleString () } 以降 `}
+			  {post.originalCreatedBefore
+			   && `${ (new Date (post.originalCreatedBefore)).toLocaleString () } より前`}
+			</>)}
+		  </li>
+		</ul>
+	      </div>)}
+	</motion.div>
       </SidebarComponent>)
 }) satisfies FC<Props>

frontend/src/components/TagSidebar.tsx

@@ -1,4 +1,5 @@
 import axios from 'axios'
+import { AnimatePresence, motion } from 'framer-motion'
 import { useEffect, useState } from 'react'
 import { useLocation, useNavigate } from 'react-router-dom'
 
@@ -8,7 +9,6 @@ import SectionTitle from '@/components/common/SectionTitle'
 import SidebarComponent from '@/components/layout/SidebarComponent'
 import { API_BASE_URL } from '@/config'
 import { CATEGORIES } from '@/consts'
-import { cn } from '@/lib/utils'
 
 import type { FC } from 'react'
 
@@ -61,37 +61,52 @@ export default (({ posts }: Props) => {
   return (
       <SidebarComponent>
 	<TagSearch/>
-	<div className={cn (!(tagsVsbl) && 'hidden', 'md:block mt-4')}>
-	  <SectionTitle>タグ</SectionTitle>
-	  <ul>
-	    {CATEGORIES.flatMap (cat => cat in tags ? (
-		tags[cat].map (tag => (
-		    <li key={tag.id} className="mb-1">
-		      <TagLink tag={tag}/>
-		    </li>))) : [])}
-	  </ul>
-	  <SectionTitle>関聯</SectionTitle>
-	  {posts.length > 0 && (
-	      <a href="#"
-		 onClick={ev => {
-		   ev.preventDefault ()
-		   void ((async () => {
-		     try
-		     {
-		       const { data } = await axios.get (`${ API_BASE_URL }/posts/random`,
-			   { params: { tags:  tagsQuery.split (' ').filter (e => e !== '').join (' '),
-				       match: (anyFlg ? 'any' : 'all') } })
-		       navigate (`/posts/${ (data as Post).id }`)
-		     }
-		     catch
-		     {
-		       ;
-		     }
-		   }) ())
-		 }}>
-		ランダム
-	      </a>)}
-	</div>
+
+	<AnimatePresence initial={false}>
+	  {tagsVsbl && (
+	      <motion.div
+		  key="sptags"
+		  className="md:block mt-4"
+		  variants={{ hidden:   { clipPath: 'inset(0 0 100% 0)',
+					  height:   0 },
+			      visible:  { clipPath: 'inset(0 0 0% 0)',
+					  height:   'auto'} }}
+		  initial="hidden"
+		  animate="visible"
+		  exit="hidden"
+		  transition={{ duration: .2, ease: 'easeOut' }}>
+		<SectionTitle>タグ</SectionTitle>
+		<ul>
+		  {CATEGORIES.flatMap (cat => cat in tags ? (
+		      tags[cat].map (tag => (
+			  <li key={tag.id} className="mb-1">
+			    <TagLink tag={tag}/>
+			  </li>))) : [])}
+		</ul>
+		<SectionTitle>関聯</SectionTitle>
+		{posts.length > 0 && (
+		    <a href="#"
+		       onClick={ev => {
+			 ev.preventDefault ()
+			 void ((async () => {
+			   try
+			   {
+			     const { data } = await axios.get (`${ API_BASE_URL }/posts/random`,
+				 { params: { tags:  tagsQuery.split (' ').filter (e => e !== '').join (' '),
+					     match: (anyFlg ? 'any' : 'all') } })
+			     navigate (`/posts/${ (data as Post).id }`)
+			   }
+			   catch
+			   {
+			     ;
+			   }
+			 }) ())
+		       }}>
+		      ランダム
+		    </a>)}
+	      </motion.div>)}
+	</AnimatePresence>
+
 	<a href="#"
 	   className="md:hidden block my-2 text-center text-sm
 		      text-gray-500 hover:text-gray-400

frontend/src/components/TopNav.tsx

@@ -1,5 +1,6 @@
 import axios from 'axios'
 import toCamel from 'camelcase-keys'
+import { AnimatePresence, motion } from 'framer-motion'
 import { Fragment, useState, useEffect } from 'react'
 import { Link, useLocation } from 'react-router-dom'
 
@@ -136,37 +137,50 @@ export default (({ user }: Props) => {
 	      </Link>))}
 	</div>
 
-	<div className={cn (menuOpen ? 'flex flex-col md:hidden' : 'hidden',
-			    'bg-yellow-200 dark:bg-red-975 items-start')}>
-	  <Separator/>
-	  {menu.map ((item, i) => (
-	      <Fragment key={i}>
-		<Link to={i === openItemIdx ? item.to : '#'}
-		      className={cn ('w-full min-h-[40px] flex items-center pl-8',
-				     ((i === openItemIdx)
-				      && 'font-bold bg-yellow-50 dark:bg-red-950'))}
-		      onClick={ev => {
-			if (i !== openItemIdx)
-			  {
-			    ev.preventDefault ()
-			    setOpenItemIdx (i)
-			  }
-		      }}>
-		  {item.name}
-		</Link>
-		{i === openItemIdx && (
-		    item.subMenu
-		    .filter (subItem => subItem.visible ?? true)
-		    .map ((subItem, j) => 'component' in subItem ? subItem.component : (
-			<Link key={j}
-			      to={subItem.to}
-			      className="w-full min-h-[36px] flex items-center pl-12
-					 bg-yellow-50 dark:bg-red-950">
-			  {subItem.name}
-			</Link>)))}
-	      </Fragment>))}
-	  <TopNavUser user={user} sp/>
-	  <Separator/>
-	</div>
+	<AnimatePresence initial={false}>
+	  {menuOpen && (
+	      <motion.div
+		  key="spmenu"
+		  className={cn ('flex flex-col md:hidden',
+				 'bg-yellow-200 dark:bg-red-975 items-start')}
+		  variants={{ closed: { clipPath: 'inset(0 0 100% 0)',
+					height:   0 },
+			      open:   { clipPath: 'inset(0 0 0% 0)',
+					height:   'auto' } }}
+		  initial="closed"
+		  animate="open"
+		  exit="closed"
+		  transition={{ duration: .2, ease: 'easeOut' }}>
+		<Separator/>
+		{menu.map ((item, i) => (
+		    <Fragment key={i}>
+		      <Link to={i === openItemIdx ? item.to : '#'}
+			    className={cn ('w-full min-h-[40px] flex items-center pl-8',
+					   ((i === openItemIdx)
+					    && 'font-bold bg-yellow-50 dark:bg-red-950'))}
+			    onClick={ev => {
+			      if (i !== openItemIdx)
+				{
+				  ev.preventDefault ()
+				  setOpenItemIdx (i)
+				}
+			    }}>
+			{item.name}
+		      </Link>
+		      {i === openItemIdx && (
+			  item.subMenu
+			  .filter (subItem => subItem.visible ?? true)
+			  .map ((subItem, j) => 'component' in subItem ? subItem.component : (
+			      <Link key={j}
+				    to={subItem.to}
+				    className="w-full min-h-[36px] flex items-center pl-12
+					       bg-yellow-50 dark:bg-red-950">
+				{subItem.name}
+			      </Link>)))}
+		    </Fragment>))}
+		<TopNavUser user={user} sp/>
+		<Separator/>
+	      </motion.div>)}
+	</AnimatePresence>
       </>)
 }) satisfies FC<Props>